Sitecore 8.1 update 1 package install

Iâm trying to install the Coveo for Sitecore 81 3.0 (1188).zip package on a Sitecore 8.1 update 1 install and itâs saying that âOne or more exceptions occurred while processing the subscribers to the 'packageinstall:ended' event.â before anything can happen.

Have any of you seen this before? Iâve successfully attempted the same thing on another VM but I havenât figured out whatâs different yet.

It suggests restoring the Sitecore database and file system. It seems that his instance got corrupted before he installed a package.

I suggest you to look at your Sitecore logs to find other errors before you tried to install the package. Maybe your Sitecore instance is corrupted or in a bad state and any package you would try to install would end with this error?